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ScienceDaily: Fossils & Ruins News |
| New evidence may change timeline for when people first arrived in North America Posted: 01 Jun 2021 01:50 PM PDT An unexpected discovery suggests that the first humans may have arrived in North America more than 30,000 years ago - nearly 20,000 years earlier than originally thought. |
| Taking a bite out of tooth evolution: Frogs have lost teeth more than 20 times Posted: 01 Jun 2021 10:57 AM PDT Researchers analyzed CT scans of nearly every living amphibian genus to reveal that frogs have lost teeth over 20 times during their evolution, more than any other vertebrate group. |
| Looking at future of Antarctic through an Indigenous Maori lens Posted: 01 Jun 2021 07:07 AM PDT It is time for the management and conservation of the Antarctic to begin focusing on responsibility, rather than rights, through an Indigenous Maori framework, an academic argues. |
| Seeds of economic health disparities found in subsistence society Posted: 01 Jun 2021 07:06 AM PDT The Tsimane subsistence communities living on the edge of the Bolivian Amazon have less inequality but also fewer chronic health problems linked to the economic disparity of industrialized Western societies. Researchers tracked 13 different health variables across 40 Tsimane communities, analyzing them against individual's wealth and each community's degree of inequality. While some have theorized that inequality's health impacts are universal, researchers found only two robustly associated outcomes: higher blood pressure and respiratory disease. |
| Extreme CO2 greenhouse effect heated up the young Earth Posted: 31 May 2021 12:32 PM PDT Although sun radiation was relatively low, the temperature on the young Earth was warm. An international team of geoscientists has found important clues that high levels of carbon dioxide in the atmosphere were responsible for these high temperatures. It only got cooler with the beginning of plate tectonics, as the CO2 was gradually captured and stored on the emerging continents. |
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